Finding the Fourth Proportional to 16,739.50, 23,091.79 and 9,929.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,739.50 : 23,091.79 = 9,929.56 : x
2. Step 2: Convert to fraction form
   16,739.50/23,091.79 = 9,929.56/x
3. Step 3: Cross multiply
   16,739.50x = 23,091.79 × 9,929.56
4. Step 4: Simplify right side
   16,739.50x = 229,291,314.31
5. Step 5: Solve for x
   x = 229,291,314.31/16,739.50
6. Step 6: Final answer
   x = 13,697.62